Cyber-Defenses Wont Compromise Privacy
In his speech, Lynn is, in effect, acknowledging that the DOD and the country's top cyber cop, the National Security Agency, can't possibly monitor all the traffic that passes through networks in the U.S., but that it can watch for patterns of activities that can signal cyber-attacks. By analyzing these attacks, the company being attacked can, not only prevent the attack from proceeding, but it can also prevent future attacks. While it's not clear just how widespread the DIB Cyber Pilot program is, certainly, it's already in use and meeting with some success. It's also clearly not intended (or even able) to monitor individual communications. This, of course, makes a great deal of sense. Preventing an area-wide power-grid collapse, preventing interference with rail transportation or air-traffic control involves no personal data at all. But such an attack could cripple the U.S.
Perhaps you remember early in the summer of 2011 when the computer booking systems at two major airlines went offline and created chaos for days for travelers around the world. While there's no public indication that these computer outages were the work of cyber-attackers, think of what might happen if attackers were to take out the operations systems of several major airlines.